CVE-2025-6596

NameCVE-2025-6596
DescriptionImproper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Vector. This vulnerability is associated with program files resources/skins.Vector.Js/portlets.Js, resources/skins.Vector.Legacy.Js/portlets.Js. This issue affects Vector: from >= 1.40.0 before 1.42.7, 1.43.2, 1.44.0.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mediawiki (PTS)bullseye1:1.35.13-1+deb11u2fixed
bullseye (security)1:1.35.13-1+deb11u6fixed
bookworm, bookworm (security)1:1.39.17-1~deb12u1fixed
trixie (security), trixie1:1.43.6+dfsg-1~deb13u1fixed
forky, sid1:1.43.6+dfsg-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mediawikisourcebullseye(not affected)
mediawikisourcebookworm(not affected)
mediawikisource(unstable)1:1.43.3+dfsg-1

Notes

[bookworm] - mediawiki <not-affected> (Introduced in 1.40)
[bullseye] - mediawiki <not-affected> (Introduced in 1.40)
https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/TT45WDZ7MDTXXBEFLBMLAJI532O2PN2U/
https://phabricator.wikimedia.org/T396685
https://gerrit.wikimedia.org/r/c/mediawiki/skins/Vector/+/1165107 (master)

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